How to judge the unbalance of automobile universal coupling and its treatment method

　　In the 20s and 60s, automobile universal joints were widely used in developed industries.

　　After the reform and opening up, with the introduction of large-scale industrial devices, automobile couplings have gradually become familiar to the Chinese people.Due to the many advantages of automobile couplings, it has now become the SZ of process power equipment, especially large petrochemical flow pumps, boiler water supply pumps, air blowers, and compressor units.

　　In the early 20s, some domestic scientific research institutions began the design and application of automobile universal couplings.

　　After more than 20 years of development, its application performance has evolved from low-power, low-speed water pump units to high-power, high-speed turbine units.Domestic universal couplings have basically replaced imported products.At the same time, automobile universal couplings are often used in old couplings, sometimes resulting in a "molding" effect.

　　However, domestic users are often worried about choosing domestic universal joints, especially for large turbo compressor units.They are mainly worried about the following three aspects:

　　1.Worry about the substandard design and manufacture of domestic automobile universal joints.

　　2. Worry that domestic materials will not pass the test.

　　3. Worry about the lack of application performance of domestic automobile universal joints.

　　In fact, these fears are now unnecessary.

　　Domestic mainstream companies generally start with basic research, master key technologies such as material selection, design calculation, processing technology, dynamic balance, etc., and have more than 20 years of engineering application experience.

　　The key material of automobile universal coupling is metal diaphragm, generally imported austenitic stainless steel.There is no difference between domestic and foreign materials.In terms of design and calculation, finite element and optimization techniques are widely used. The product performance of domestic mainstream companies is equivalent to that of foreign countries. The stress distribution given by the finite element analysis of a typical diaphragm; the optimized diaphragm shape only retains the torque required for transmission And remove almost all excess materials.Such a diaphragm not only has a more reasonable stress distribution.And it has the flexibility to compensate for larger errors, and the reaction force on the connecting device is smaller.

　　In terms of processing technology, precision blanking, laser cutting and various high-precision machining centers are used in the manufacturing process of automotive universal coupling parts. The machining accuracy and surface condition of the parts are not significantly different from those of foreign products.In short, comparing the design performance and processing level of domestic automobile universal joints with foreign companies, it is completely possible to design and manufacture high-performance automobile universal joints of various brands that meet the standards.

　　How to judge the imbalance of automobile universal coupling and its treatment

　　The general coupling of the vehicle is unbalanced, and there will be periodic sounds when driving. The faster the driving speed, the louder the sound.

　　In severe cases, the vehicle body will tremble, the cab will vibrate, and the steering wheel will feel numb.

　　The universal coupling of the vehicle is unbalanced, and periodic sounds will be produced during driving. The faster the driving speed, the greater the noise.When it is severe, the body will tremble, the cab will vibrate, and there will be a numb feeling when holding the steering wheel.

　　Due to the tremor of the vehicle body, various parts of the vehicle will loosen and cause accidents.The severe vibration of the cab will cause the solder joints to crack.

　　车辆损坏原因包括：(1)传动轴弯曲;(2)传动轴法兰和轴管斜位;(3)中间支座固定螺栓;(4)接头损坏，不需要安装;(5)原平衡块从传动轴上拆下。传动轴的副轴使传动更加平顺。

　　If the unbalanced drive shaft fails, you can use the following methods to judge: lock the front wheel of the car with a slider, use the middle and rear drive shaft on the side of the jack; start the engine, suspend the high gear, and observe the swing of the drive shaft.

　　In the inspection process, it should be noted that when the speed is reduced, if the shimmy increases significantly, it will indicate that the drive shaft is bent or the flange is deformed.The bending of the transmission shaft is caused by the bending of the shaft tube, which is mainly caused by the overload of the car.Due to overload and overhang, the bend and break of the drive shaft of coal trucks are more frequent.

　　For example, some cars and trailers hauled more than 60 tons of coal, and the drive shaft was seriously damaged due to overload and suspension.The intermediate support of the drive shaft is strengthened, and the strength of the flange fork is strengthened, but failures still occur.After changing the drive shaft components and straightening, the balance check should be carried out, and the unevenness of the measurement should meet the requirements of the standard.

　　The technical condition of the universal joint fork frame and the drive shaft hanger should also be inspected in detail.If the installation is not qualified, the damage of the horizontal shaft and the roller will cause looseness and vibration, which will also make the drive shaft out of balance.

　　The content of the aforementioned automobile universal coupling.After reading it, do you know anything? According to our website, you can get more information and more about it.